Developmental And Epileptic Encephalopathy 4 C2677326
A severe neurological disorder causing early-onset seizures and significant developmental delays in children. Treatment focuses on seizure management and supportive care to address multiple symptoms.
Key facts at a glance
- ICD-10
- G40.909
- ICD-11
- 8A00.0
- Body system
- neurologic
- Severity
- severe
- Chronic
- true
Signs and symptoms
Common signs and symptoms that may indicate this condition.
Warning signs - seek immediate care
Recurrent seizures
Generalized symptoms
(neurologic)Significant symptoms that substantially affect daily functioning.
Frequency: Common at all stages
Developmental delay
(neurologic)Hypotonia
(neurologic)Spasticity
(neurologic)Diagnosis and tests
How this condition is diagnosed and what test results mean.
Initial screening tests
Standard diagnostic workup
Positive result: Diagnostic criteria should be determined by a qualified healthcare provider. [Content pending medical review.]
Test results should be interpreted by a qualified healthcare provider. [Content pending medical review.]
Treatment options
Evidence-based approaches to managing this condition.
First-line treatments
Anti-seizure medications (ASMs)
Standard first-line pharmacological intervention using broad-spectrum ASMs to control tonic-clonic and myoclonic seizures common in DEE4.
Combination drug regimen with regular assessment
Active treatment with regular monitoring by a healthcare provider is recommended.
Low Glycemic Index Treatment (LGIT)
Less restrictive dietary option with focus on low glycemic index carbohydrates, providing an alternative for patients who cannot tolerate standard ketogenic diet.
Additional treatment options
Deep Brain Stimulation (DBS)
Bilateral stimulation of thalamic nuclei as a neuromodulation option for medication-resistant seizures. Reserved for severe, refractory cases.
procedureCognitive Behavioral Therapy and Family Support
Psychological interventions addressing behavioral challenges, anxiety, and family caregiver burden associated with caring for a child with severe epilepsy.
psychologicalAdaptive Physical Activity Program
Customized exercise program designed to maintain joint mobility, prevent contractures, and improve cardiovascular health while accommodating seizure risks.
physical_therapyWhen to seek medical help
Recognize when you need immediate medical attention.
See a doctor within 24 hours
Moderate to severe symptoms that may indicate worsening of this condition. Prompt medical evaluation is recommended.
Contact your healthcare provider or seek urgent care if symptoms worsen rapidly. Go to the emergency department for life-threatening symptoms.
Frequently asked questions
Common questions about this topic.
What is Developmental And Epileptic Encephalopathy 4 C2677326?
Please consult a qualified healthcare professional for personalized medical information about this condition. [Content pending medical review.]
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This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.
If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.
Medically reviewed by WellAlly Editorial Team Last reviewed August 25, 2026. · Read our editorial policy